Timney's ar pcc trigger is a drop in, complete assembly trigger and is factory tuned for pull weight, with no creep.It makes use of your rifle's original hammer/trigger pins as well as safety, and allows you to become more accurate with your rifle.This model features a curved trigger shoe.Note: this model is not compatible with the sig mpx.Finish: BlackType: Drop-In TriggerModel: PCC TriggerMaterial: Steel w/Aluminum HousingTrigger: 2.5-3 lbs